CN104602879B

CN104602879B - Method and system for manufacturing composite product and composite product

Info

Publication number: CN104602879B
Application number: CN201280075582.9A
Authority: CN
Inventors: H·科索宁; K·鲁科; S·图伦尼; J·萨尔米宁; S·弗斯; P·米尔丽泰
Original assignee: UPM Kymmene Oy
Current assignee: UPM Kymmene Oy
Priority date: 2012-08-28
Filing date: 2012-08-28
Publication date: 2017-05-17
Anticipated expiration: 2032-08-28
Also published as: US9574075B2; EP2890539A1; US20150240062A1; EP2890539B1; EP2890539A4; WO2014033352A1; JP6082812B2; JP2015529582A; CN104602879A

Abstract

The invention relates to a method for manufacturing a composite product comprising organic natural fiber material and matrix material, wherein the method comprises mixing the organic natural fiber material with the matrix material in a primary mixing stage to form a mixture. The primary mixing stage comprises a contacting step in which the organic natural fiber material comes in contact with the matrix material that is at least partly in a form of melt, and bulk density of the organic natural fiber material is less than 500 kg/m3. The method further comprises forming a composite product comprising the mixture. Further, the invention relates to a composite product, a use of the composite product, and a system for manufacturing a composite product.

Description

The method and system and joint product of manufacture joint product

Technical field

The present invention relates to manufacture the method and system of joint product.Additionally, the present invention relates to joint product and the compound product The application of product.

Background technology

The a variety of wood formed from the material and polymer based on timber generally by extrusion molding known in the art Material-polymer complex.

The content of the invention

It is an object of the invention to provide a kind of new joint product.The joint product can be final products or middle product Product.Another object of the present invention is to disclose the new method and system of a kind of manufacture joint product.Another object of the present invention It is the new application for disclosing the joint product.

Manufacture the feature of method of joint product of the invention as described in the appended claim 1.It is of the invention multiple The feature of product is closed as described in claim 17 and 21.Institute in the feature such as claim 26 of the system of manufacture joint product State.The feature of the application of joint product of the invention is as recited in claim 25.

Preferably, method of the manufacture comprising organic natural fiber material and the joint product of host material includes following step Suddenly：

- organic natural fiber material is mixed with host material in main mix stages, form mixture, the main mixing rank Section includes contact procedure, wherein,

The matrix material contacts of-organic natural fiber material and at least partially melt form,

The bulk density of-organic natural fiber material is less than 500kg/m³,

And

- form the joint product comprising the mixture.

Preferably, organic natural fiber material was crushed before contact procedure, loose organic natural fiber material is formed.

Preferably, the bulk density of organic natural fiber material is less than 160kg/m³。

Preferably, in the contact procedure of main mix stages, in the case of without heavy compression, organic natural fiber material is made Material mixes with host material, described to refer to be used for the pressure for compressing organic natural fiber material in contact procedure without heavy compression Power is less than 2 bars, more preferably less than 1 bar.

Preferably, under vacuo or material mixing is made in the case where there is nitrogen, air and/or helium.

Preferably, in the contact procedure of mixing, the water capacity of organic natural fiber material is less than 7%, preferably shorter than 5%.

Preferably, at least one blender that can heat the mixture used in main mix stages.

Preferably, by the total dry weight of joint product, the content of organic natural fiber material is at least 10 dry weights %, more Preferably 20-80 dry weights %.

Preferably, the content of lignin of organic natural fiber material is less than 15 weight %.

Preferably, calculated by the total amount of organic natural fiber material, it is dry that the amount of the fibrous material of sheet form is at least 30 Weight %.

Preferably, the fusing point of host material is less than 250 DEG C, and/or the glass transition temperature of host material is less than 250℃。

Preferably, by being molded and/or being extruded into joint product.

Preferably, host material is thermoplastic.

Preferably, organic natural fiber material of at least 90 weight % is timber.

Preferably, the length of the organic natural fiber material of at least 90 weight % is between 0.1mm-3mm.

Preferably, joint product of the invention includes organic natural fiber material and thermoplastic matrix material, and

- calculated by the gross weight of joint product, the amount of organic natural fiber material is 10-80 weight %,

- calculated by the gross weight of joint product, the amount of host material is 5-95 weight %,

The density of-joint product is 0.9-1.60g/cm³, and/or the density of joint product be solid density extremely Few 85%.

In one embodiment, joint product is final products.In another embodiment, joint product is middle Product.

In one embodiment, joint product is particle form, and the weight of 100 granules is 2.0-4.0g, standard deviation Difference is less than 15%, more preferably less than 7%.

Preferably, 1.5 weight % of the moisture that dry joint product was absorbed in 48 hours less than joint product weight ((65% relative humidity and 27 DEG C of air).

Preferably, include for system of the manufacture comprising organic natural fiber material and the joint product of host material：

- the first blender, for making organic natural fiber material mix with host material in main mix stages, forms mixed Compound.The main mix stages include contact procedure, wherein,

The bulk density of-organic natural fiber material is less than 500kg/m³。

Preferably, the system also includes the device for forming the joint product comprising the mixture.It is multiple for being formed Closing the device of product can be included in the first blender, or can be independent equipment.

Have benefited from the present invention, realize the following technique effect of at least a portion.

- in main mix stages, it can be ensured that moistening of the host material to organic natural fiber material.Therefore, You Jitian So fibrous material can be evenly dispersed in host material, and the fiber of organic natural fiber material can equably by substrate material Material moistening.

- can prevent in main mix stages, covalent bond or strong is formed between the fiber of organic natural fiber material Physical bond or strong mechanical connection.

- may insure the adhesion of the fiber to host material of organic natural fiber material.

- joint product without fiber agglomerate can be obtained.

- light color can be realized.

- joint product it is well dispersed.

The particle size distribution of the raw material of-joint product is controllable.

- in one embodiment, raw material used is without lignin.

Description of the drawings

Including accompanying drawing to provide a further understanding of the present invention, accompanying drawing constitutes a part for description, illustrates this Some embodiments of invention, help explain the principle of the present invention together with description.

Fig. 1-6 shows the flow chart of simplified embodiment of the present invention.

Specific embodiment

Hereinafter, if not stated otherwise, all of percent is in terms of dry weight.

Figure below labelling is used in this application：

11 organic natural fiber materials,

11a loose organic natural fiber material,

12 host materials,

15 mixture comprising organic natural fiber material and host material,

20 pretreatment stages,

21 pre-mix stages,

The pre-mixing process of the organic natural fiber materials of 21a,

The pre-mixing process of the unfused host materials of 21b and organic natural fiber material,

23 pre- crushing stages, crushing,

24 preliminary separation stages,

25 chemical treatments,

27 premixing devices,

28 crushing machines, crush device,

29 separators,

30 main process task stages,

36 main mix stages,

The contact procedure of the main mix stages of 36a,

The blend step of the main mix stages of 36b,

37 devices for being used for the main process task stage,

38 equipment for being used for main mixing,

39 are used to being formed the device of joint product, such as extruder,

39a is used to form the first step of joint product,

39b is used to form the second step of joint product,

40 joint products,

Joint product in the middle of 40a, and

The final joint products of 40b.

In an embodiment of the invention, formed comprising organic natural fiber material 11,11a and host material 12 Joint product.Preferably, organic natural fiber material drying, is then crushed, then organic natural fibre with lapping device 28 Dimension material 11a mixes (preferably without compression) with the host material 12 of at least part of fusing, forms mixture 15.Preferably, substrate Into a phase, in the phase, organic natural fiber material adheres to melting host material, therefore organic natural fiber to melt material Material is by host material moistening.

In this application, term " pressure compression " and " compression " are the air pressure that finger pressure exceedes environmental gas, therefore are compressed Certain material.For example, in the case of organic natural fiber material, the pressure for compressing organic natural fiber material refers to compression Organic natural fiber material and thus increase organic natural fiber material bulk density pressure.

Term " organic natural fiber material 11,11a " refers to the granule comprising cellulose.In other words, organic natural fiber material Material may originate from any vegetable material comprising cellulose, you can with using timber and non-wood material.

Timber can be softwood trees such as PiceameyeriRehd. Et Wils., pinaster, fir, larch, Pseudotsuga menziesii (Mirbel) Franco or Chinese hemlock spruce, or palohierror such as Betula, Cortex Populi dividianae, willow, alder, Eucalyptuss or Acacia farnesiana Willd., or the mixture of cork and hardwood.Non-wood material can be agriculture defective material, grass Or from Cotton Gossypii, Semen Maydiss, Semen Tritici aestivi, Herba bromi japonici, rye (Secale cereale L.), Fructus Hordei Vulgaris, rice, Caulis et Folium Lini, Fructus Cannabiss, abaca, Folium Agaves Sisalanae, Corchorus olitorius L., Boehmeria, ocean Other plant materials of fiber crops, sisal noil (bagasse), bamboo or phragmites communiss, such as straw, Cortex cocois radiciss, leaf, bark, seed, Shell, flower, vegetable or fruit.

Preferably, at least 30 weight % or at least 40 weight %, more preferably at least 50 weight % or at least 60 weight %, most Organic natural fiber material of preferably at least 80 weight % or at least 90 weight % is based on timber.Preferably, at least 30 weights Amount % or at least 40 weight %, at least more preferably at least 50 weight % or 60 weight %, most preferably at least 80 weight % or at least Organic natural fiber material of 90 weight % is from hardwood.In this case, preferably at least 30 weight % or at least 40 weight %, More preferably at least 50 weight % or at least 60 weight %, the hardwood of most preferably at least 80 weight % or at least 90 weight % is Betula And/or Eucalyptuss.Or or in addition, at least 30 weight % or at least 40 weight %, at least more preferably at least 50 weight % or 60 weights Amount %, organic natural fiber material of most preferably at least 80 weight % or at least 90 weight % is from cork.But, it is organic natural The total amount of cork and hardwood is less than 100 weight % in fibrous material.Preferably, at least 30 weight % or at least 40 weight %, More preferably at least 50 weight % or at least 60 weight %, the cork of most preferably at least 80 weight % or at least 90 weight % is pinaster Or PiceameyeriRehd. Et Wils..

Organic natural fiber material can be fibers form, such as floccules, ultimate fibre or filamentary part, Huo Zheyou Machine natural fiber material can be the form of fibrous particle, such as sawdust or the material through grinding, wherein the material is not With accurate spherical form, but the longest dimension of granule it is preferably long than shortest dimension 5 times less than.

It is preferred that organic natural fiber material at least partly fibers form.Preferably, at least 40 weight % or at least 50 Weight %, organic natural fiber material of more preferably at least 60 weight % or at least 70 weight %, most preferably at least 80 weight % It is fibers form.In this application, length is at least 0.1mm, more preferably at least 0.2mm, more preferably at least 0.3mm's has Machine natural fiber material is referred to as fiber, and than above-mentioned smaller granule powder or fibrous particle are referred to as.Preferably at least 70%, Length weight (length weighted) fibre length of at least 80% or at least 90% organic natural fiber material is less than 4mm, less than 3mm or less than 2.5mm, more preferably less than 2.0mm, less than 1.5mm, less than 1.0mm or less than 0.5mm.Preferably, Length weight (length weighted) fiber of at least 70%, at least 80% or at least 90% organic natural fiber material Length is at least 0.1mm or at least 0.2mm, at least more preferably at least 0.3mm or 0.4mm.Preferably, fiber has With regard to the shape ratio at least 5 of ratio between fibre length and fiber thickness, more preferably at least 10, more preferably at least 25, most More preferably at least 40.Addition or alternatively, the shape with regard to ratio between fibre length and fiber thickness that fiber has is than excellent Choosing is 1500, more preferably at most 1000, most preferably at most 500 to the maximum.In one example, made using U.S. Zhuo (Metso) The measuring apparatus measurement fibre length of the entitled Fiberlab for making.

Preferably, organic natural fiber material 11, fibers of the 11a comprising sheet form.Thin slice is that fiber width at least compares The fiber of big 2 times of fiber thickness.Preferably, the width of thin slice is at least 2 times of sheet thickness, preferably at least 2.5 times, more excellent At least 3 times of choosing.Preferably, the thickness of thin slice is 1-30 microns, and more preferably the thickness of thin slice is between 2-20 microns.It is more preferably thin The thickness of piece is less than 15 μm, more preferably less than 10 μm, more preferably less than 7 μm.In one embodiment, the width of thin slice is less than 500 μm, preferably smaller than 200 μm, more preferably less than 50 μm.Preferably, the aspect ratio with regard to ratio between length and width is 10- 100.Preferably, the aspect ratio with regard to ratio between length and thickness is less than 1500 or less than 1000, and more preferably less than 500, most It is preferred that between 25-300.In one embodiment, sheet length is at least 10 times of sheet width.In an embodiment In, thin slice has flat pattern.In one embodiment, thin slice has plate-like shape.In one embodiment, You Jitian So fibrous material comprising occupy at least 30 dry weights % of machine natural fiber total amount, preferably at least 50 dry weights %, more preferably at least 70 The fibrous material of the sheet form of dry weight %.

Organic natural fiber material can be included through mechanical treatment and/or chemically treated fiber and/or fibrous particle.

Wood powder can be included through organic natural fiber material of mechanical treatment, sawdust, chip material and/or mechanical pulp are such as TMP (thermomechanical pulp), GW (ground wood pulp)/SGW (stone grinder wooden oar), PGW (pressure ground pulp), RMP (refiner mechanical pulp) and/or CTMP (chemical thermo-mechanical pulp), etc..Wooden granule (such as wood is preferably comprised through organic natural fiber material of mechanical treatment Fiber) or be made up of wooden granule (such as the wood fiber), but the material can also be made up of comprising non-wood material or non-wood material.Jing Crossing organic natural fiber material of mechanical treatment can include recirculation and/or fresh granule, such as fiber or threadiness Grain.Preferably, at least 30 weight % or at least 40 weight %, more preferably at least 50 weight % or at least 60 weight %, most preferably Used organic natural fiber material of at least 80 weight % or at least 90 weight % is fresh.Generally, for example, wood and plastic composite Material (WPC) comprising sawdust or at least other through the wooden granule or plant granule of mechanical treatment as predominantly organic natural fiber material Material.

Chemical pulp is preferably comprised through chemically treated organic natural fiber material.For example, chemical pulp can come from Kraft paper pulping process or sulphite pulping process, but other chemical technologies, such as soda pulping process can also be used. Preferably, chemical pulp is from kraft paper pulping process.Wooden base is preferably comprised through chemically treated organic natural fiber material Cellulose is made up of wood-based fibre element, but the material can also be non-wood material.Through chemically treated organic natural fibre Dimension material can include recirculation and/or fresh fiber and/or fibrous particle.Preferably, at least 30 weight % or at least 40 weight %, more preferably at least 50 weight % or at least 60 weight %, most preferably at least 80 weight % or at least 90 weight % Organic natural fiber material used is through chemically treated granule.Preferably, at least 30 weight % or at least 40 weight %, more Preferably at least 50 weight % or at least 60 weight %, the used of most preferably at least 80 weight % or at least 90 weight % passes through chemistry The granule of process is from kraft paper pulping process.Preferably, the content of lignin through chemically treated paper pulp is less than 15 weights Amount %, preferably smaller than 10 weight % or less than 5 weight %, more preferably less than 3 weight %, less than 2 weight % or less than 1 weight Amount %, more preferably less than 0.5 weight %.Preferably, the chemical cellulose content through chemically treated paper pulp is more than 50 weight %, Preferably greater than 60 weight %, more preferably greater than 70 weight %, most preferably greater than 72 weight % or more than 75 weight %.Preferably, 99 weight %, more preferably less than preferably shorter than 90 weight %, 85 weights are less than through the chemical cellulose content of chemically treated paper pulp Amount %, most preferably less than 80 weight %.

Preferably, at least 30 weight % or at least 40 weight %, more preferably at least 50 weight % or at least 60 weight %, most Used organic natural fiber material of preferably at least 80 weight % or at least 90 weight % is fresh.

Preferably, the content of lignin of organic natural fiber material is less than 15 weight %, preferably smaller than 10 weight % or little In 5 weight %, more preferably less than 3 weight % or less than 1 weight %, more preferably less than 0.5 weight %.Content of lignin may be because It is relatively low for delignification process, or the content of lignin sheet of organic natural fiber material is in low-level.Preferably, have The content of lignin of machine natural fiber material is at least 0.05 weight %, at least more preferably at least 0.10 weight % or 0.2 weight Amount %, more preferably at least 0.3 weight %.In one embodiment, the content of lignin of organic natural materials is more than 3 weights Amount %, more than 5 weight % or more than 10 weight %.

In one embodiment, the form of the organic natural fiber material of at least a portion is the scraps of paper or net, plate or net, Lodicule or net, or the fibre substrate or the fibre plate of compacting of compacting, and combinations thereof.

In one embodiment, the form of the organic natural fiber material of at least a portion is big fiber or fibre bundle, paper Chaff, paper pulp chaff, the paper pulp material of crushing, their derivant or combinations thereof.

In one embodiment, the organic natural fiber material of at least a portion is viscose rayon form.However, it is preferred to have The amount of machine natural fiber material be based on it is untreated in system or product and/or according to the method described above mechanical treatment and/or According to the method described above the gross weight of chemically treated organic natural fiber material is calculated, not including viscose rayon.Preferably, The amount of the viscose rayon calculated by the total amount of organic natural fiber material less than 5 weight % or less than 4 weight %, more preferably less than 3 weight % or less than 2 weight %, more preferably less than 1 weight %, less than 0.5 weight % or less than 0.1 weight %.

In this application, term " host material 12 " refers to the material that preferably can be configured to new shape in heating for several times. The material keeps after the cooling period its new shape, and then pole is slowly flowed, or does not flow completely.The host material has at least one Individual repetitives, the molecular weight of host material is more than 18g/mol, preferably greater than 100g/mol, more than 500g/mol, or is more than 1000g/mol, more preferably greater than 10 000g/mol, or more than 100 000g/mol.

Host material 12 preferably comprises thermoplastic；Therefore host material includes thermoplastic component.Preferably, substrate material The amount of thermoplastic is at least 80 weight %, more preferably at least more preferably at least 90 weight %, 95 weight % in material.It is preferred that Ground, host material includes at least one crystalline polymer and/or at least one amorphous polymers, and/or at least one crystal Oligomer and/or at least one noncrystal oligomer.

Preferably, in addition to thermoplastic polymer, host material also includes polymer coupling agent.Polymer coupling agent is preferred Comprising active to host material or at least compatible with host material one or more parts and to organic natural fibre One or more active or at least compatible with organic natural fiber material parts of dimension material.If host material is non-pole Property, then one or more active to host material or compatible with host material parts are preferably nonpolar.If Host material is polarity, then one or more active to host material or compatible with host material parts are preferably pole Property.Preferred polymeric compound coupling agent is included and host material identical repetitives used.Preferably, at least 30 weight % or At least 40 weight %, at least more preferably at least 50 weight % or 60 weight %, at least most preferably at least 80 weight % or 85 weights The polymer coupling agent part of amount % is identical with host material in chemistry.Preferably, it is described that organic natural fiber material is had One or more active or compatible with organic natural fiber material parts include anhydride, acid, alcohol, isocyanates and/or aldehyde. Preferably, coupling agent is acrylic acid-grafted polymer.Or or it is other, coupling agent be methacrylic acid grafting polymerization Thing.Most preferably, coupling agent includes the polymer of maleic anhydride (maleinic acid anhydride) grafting or by the polymerization Thing is constituted.In principle, coupling agent can be any chemical reagent that can improve cohesive between two kinds of key components.This means Coupling agent can include active to host material or compatible with host material component and to organic natural fiber material Active or compatible with organic natural fiber material component.

Preferably, coupling agent includes following components or composed of the following components：

- anhydride, preferred maleic anhydride (MA),

- polymer and/or copolymer, preferred maleated polyethylene (MAPE), maleated polypropylene (MAPP), benzene second Alkene-ethylene-butylene, Styrene/maleic anhydride (SEBS-MA), and/or phenylethylene/maleic anhydride (SMA), and/or

- organic and inorganic reagent, preferred silane and/or alkoxy silane.

Preferably, at least 50 weight %, at least 60 weight %, more preferably at least 70 weight % or at least 80 weight %, most The coupling agent used of preferably at least 90 weight % is：

- anhydride, preferred maleic anhydride (MA), and/or

- organic and inorganic reagent, preferred silane and/or alkoxy silane.

Preferably, host material 12 includes being based on the host material of thermoplastic polymer and/or based on thermoplastic oligomer Host material.Thermoplastic polymer is generally at low temperature solid, and they form at a higher temperature sticky polymers and melt Body.Generally, when the temperature increases, the viscosity of these polymer declines, polymer flow, it is easier to moistening surface.When production heat During plastic composite, plus thermopolymer is melting the polymer, other components of complex and Mixing of Polymer Melt.Generally, When the viscosity of polymer relatively low (meaning that the fusion temperature of polymer is higher), these other components are easy to be mixed into polymer In.

Host material is at least partly melt form, now,

- organic natural materials can be adhered on host material, and/or

- melt flow index (establishing criteria ISO 1133 (coming into force for 2011)) of material can be measured, and/or

- organic natural fiber material can be adhered on the surface of matrix material particles.

Preferably, in the contact procedure of main mix stages, at least 10% or at least 30%, more preferably at least 50% or extremely Few 70%, most preferably at least 80% or at least 90% host material is melt form.

Preferably, during main mix stages, at least 20% or at least 40%, more preferably at least 60% or at least 80%, most preferably at least 90% or at least 95% host material is at least instantaneously melt form.

Host material based on polymer includes one or more polymer, and the host material based on oligomer includes one kind Or various oligomer.The polymer calculated by the total amount of host material and the total amount of oligomer are more preferably at least 80 weight %, extremely It is less 85 weight %, at least 90 weight %, at least 95 weight % or at least 98 weight %.

Can be any polymer or polymer composition if host material includes polymer.Preferably, substrate material Material include at least 50 weight %, at least 60 weight %, more preferably at least 70 weight % or at least 80 weight %, most preferably at least 90 Weight % or at least following component of 95 weight %：

- polyolefin, such as polyethylene and polypropylene,

- polystyrene,

- polyamide,

- polyester,

- ABS (acrylonitrile-butadiene-styrene copolymer),

- Merlon,

- biopolymer, such as polyactide,

- biodegradable polymer,

- bio-based polymers,

- thermoplastic elastomer (TPE),

- polysaccharide,

- lignin, and/or

- their derivant.

Host material 12 can include one or more polymeric material components.Preferably, at least one polymer is selected from down Group：Polyethylene, polypropylene and combinations thereof.Preferably, the amount of polypropylene and polyethylene is at least 50 weights in host material Amount %, at least at least 60 weight %, at least 70 weight %, 80 weight %, at least at least 90 weight % or 95 weights Amount %.

Preferably, the fusing point of host material is less than 250 DEG C, preferably shorter than 220 DEG C, more preferably less than 190 DEG C.Preferably, The glass transition temperature of host material is less than 250 DEG C, preferably shorter than 210 DEG C, more preferably less than 170 DEG C.

Preferably, melt flow MFR of host material less than 1000 grams/10 minutes (230 DEG C, 2.16 kilograms, life in 2011 The ISO 1133 of effect is defined), more preferably 0.1-200 gram/10 minutes, most preferably 0.3-150 gram/10 minutes.Preferably, base Melt flow MFR of material is more than 0.1 gram/10 minutes (230 DEG C, 2.16 kilograms, the ISO 1133 for coming into force for 2011 is defined), More preferably greater than 1 gram/10 minutes, most preferably greater than 3 grams/10 minutes.

Fig. 1-6 shows the flow process of some illustrative embodiments of the invention with simplified schematic diagram.

In FIG, by organic natural fiber material 11,11a pressures first in the pre- crushing stage 23 including crushing machine 28 It is broken, then processed in the preliminary separation stage 24 comprising separator 29.It is loose by what is formed in main mix stages 36,38 Organic natural fiber material 11a merge with host material 12, formed mixture 15.Joint product 40,40a, 40b are formed, should Joint product includes mixture 15.

In fig. 2, first in the pre- crushing stage 23, by organic natural fiber material 11 in 28, then 11a crushing is being led Mix stages 36, merge loose organic natural fiber material 11 with host material 12 in 38, form mixture 15.Form multiple Product 40,40a, 40b are closed, the joint product includes mixture 15.

In figure 3, by organic natural fiber material 11,11a crushing, then in main mixing first in the pre- crushing stage 23 In the stage 36, loose organic natural fiber material 11a is merged with host material 12 in 38, form mixture 15.At least two Individual processing step 39a, forms joint product 40,40a, 40b comprising mixture 15 in 39b.

In the diagram, first in pre-mix stage 21,21a, by organic natural fiber material 11 in 27,11a mixing, Ran Hou Second pre-mix stage 21,21b, merges loose organic natural fiber material 11a with solid matrix materials 12 in 27.Then, Solid matrix materials 12 at least partly melt, and in main mix stages 36a-b, host material and loose organic natural fibre are made in 38 Dimension material 11a is mutually mixed, and forms mixture 15.Joint product 40 is formed, the joint product includes mixture 15.

In Figure 5, first in pretreatment stage 20, to organic natural fiber material 11 in 25,11a carries out pretreatment, so Afterwards in main mix stages 30,36a-b, loose organic natural fiber material 11 is merged with host material 12 in 38, form mixed Compound 15.In addition, forming joint product 40a, 40b comprising mixture 15.

In figure 6, main mix stages 36, make loose organic natural fiber material 11,11a close with host material 12 in 38 And, the main mix stages include device 39, such as extruder, for forming joint product 40,40a, 40b.

Preferably, in main mix stages 36, host material 12 and organic natural fiber material 11,11a mixing.Main mixing Stage 36 includes contact procedure 36a and blend step 36b, the matrix material contacts at least partly melted in contact procedure 36a Organic natural fiber material, at least partly the host material of fusing mixes with organic natural fiber material in blend step 36b. Preferably, organic natural fiber material used was loose before mixing with the host material of at least part of fusing.

Term " loose " is defined with the bulk density of certain organic natural fiber material.Bulk density is defined as occupying The quality of the granule of container unit volume.The bulk density of granule and dusty material can by the ratio of quality and given volume come It is determined that.For example, the container for containing subject material can be carried out by the container with subject material filling known dimensions and weight Weigh to determine bulk density.Bulk density depends on particle size, particle form, material composition, water capacity, and material Process and manufacturing procedure.For example, when being poured in container, compared with aspheric granule such as fiber, circular granule it Between it is tightr.

In this application, bulk density is represented

1) apparent bulk density of organic natural fiber material, and

2) bulk density calculated of organic natural fiber material.

Apparent bulk density is the bulk density of organic natural fiber material of measurement, had not generally both pressurizeed or had not subtracted Pressure.The bulk density of calculating depends on the amount of organic natural fiber material of certain volume, and it also includes pressurization and the heap for reducing pressure Product density.

Bulk density ρ of organic natural fiber material is calculated by example weight divided by sample volume, as follows：

But, organic fibrous material is very soft and loose, and this is can be with by extruding or compressing organic natural fiber material The reason for significantly improving bulk density.

For example, can according to ISO 697 and ISO 60 (coming into force for 2011), the respective standard of other normal structures and other The similar measuring process that can ensure that the legitimate result that bulk density is measured is determining bulk density.In addition, can use The powder characteristics tester (Powder Characteristics Tester) and the flow of powder of Brookfield of Hosokawa The device of tester (Powder Flow Tester) etc, and other are intended to determine the similar of the different characteristic of dusty material Device carrys out true bulk density.Also bulk density can be measured by suitable laboratory and on-line measurement sensor, including but do not limit In the technology based on microwave.The bulk density of organic natural fiber material can as described above be determined.Preferably, according to enforcement Example 21 measures bulk density value.

Bulk density ρ of calculating_CalculateBe if within the given time organic fibrous material can be evenly distributed in can profit In volume, the bulk density that the material has.For bulk density calculated ρ of batch technology (i.e. discontinuous process)_Calculate Can determine according to the following formula：

For bulk density calculated ρ of continuous processing_CalculateCan determine according to the following formula：

Preferably, before contact procedure, the bulk density of organic natural fiber material (i.e. bulk density calculated and/or Apparent bulk density) it is less than 800kg/m³, less than 700kg/m³, less than 500kg/m³, less than 300kg/m³, or less than 250kg/ m³, more preferably less than 200kg/m³, less than 180kg/m³Or less than 150kg/m³.Most preferably, the heap of organic natural fiber material Product density is at least 10kg/m³, at least 15kg/m³, or at least 20kg/m³, more preferably at least 30kg/m³, or be at least 40kg/m³, more preferably at least 50kg/m³.Alternatively or in addition, the bulk density of organic natural fiber material is at least 10kg/ m³, at least 15kg/m³, or at least 20kg/m³, more preferably at least 30kg/m³, or at least 40kg/m³, most preferably at least For 50kg/m³.Then easily organic natural fiber material can be attached in host material.

If bulk density calculated and apparent bulk density are known, compression ratio R can be calculated.Can calculate according to the following formula Compression ratio R：

Wherein, ρ_CalculateIt is the bulk density calculated of organic natural fiber material, ρ is the apparent heap of organic natural fiber material Product density.Herein, fiber quality and fibre mass flow are based on the dry mass of fiber, i.e., in measurement and result of calculation Water quantities present in organic natural fiber material is removed.

Generally, the compression ratio R of organic natural fiber material is very important feature, and reason is until fiber at least portion Ground is divided to be surrounded by host material, organic natural fiber can produce each other combination, therefore form aggregation.These organic natural fibres Dimension material aggregation can reduce the quality of the manufactured joint product comprising organic natural fiber material.Many other fibers Material such as glass fibre will not produce under stress similar combination and aggregation, therefore, the phenomenon is for them unlike right Organic natural fiber material is important like that.

If in the contact procedure of main mix stages, the compression ratio R of organic natural fiber material is larger, is having to fiber Organic natural fiber material and matrix material contacts are made in the case of certain compression.Situation may be so set to be unfavorable for the good of fiber Good moistening, therefore dispersion of the fiber in substrate is generally poor.Therefore, it is organic in contact procedure 36a of main mix stages 36 The compression ratio R of natural fiber material compositionss is preferably smaller than 8, less than 7 or less than 6, more preferably less than 5 or less than 4, and it is most preferably little In 3 or less than 2.

Preferably, in contact procedure 36a of main mix stages 36, when apparent bulk density is 0<Bulk density<20g/l When, organic natural fiber material 11, the compression ratio R of 11a is not more than 8, such as between 0.2-8, more preferably no more than 6, for example Between 0.2-6 or between 0.5-6, most preferably no greater than 4, such as between 0.2-4 or between 0.8-4.

Alternatively or in addition, in contact procedure 36a of main mix stages 36, when bulk density calculated is 0<Bulk density <During 20g/l, organic natural fiber material 11, the compression ratio R of 11a is not more than 8, such as between 0.2-8, more preferably no more than 6, such as between 0.2-6 or between 0.5-6, most preferably no greater than 4, such as between 0.2-4 or between 0.8-4.

Preferably, in the contact procedure of main mix stages, when apparent bulk density is 20≤bulk density<During 40g/l, The compression ratio R of organic natural fiber material is not more than 6, such as between 0.2-6, more preferably no more than 4, for example 0.2-4 it Between or 0.5-4 between, most preferably no greater than 3, such as between 0.2-3 or between 0.8-3.

Alternatively or in addition, in the contact procedure of main mix stages, when bulk density calculated is 20≤bulk density< During 40g/l, the compression ratio R of organic natural fiber material is not more than 6, such as between 0.2-6, more preferably no more than 4, and for example exist Between 0.2-4 or between 0.5-4, most preferably no greater than 3, such as between 0.2-3 or between 0.8-3.

Preferably, in the contact procedure of main mix stages, when apparent bulk density is 40≤bulk density<During 80g/l, The compression ratio R of organic natural fiber material is not more than 4, such as between 0.2-4, more preferably no more than 3, for example 0.2-3 it Between or 0.5-3 between, most preferably no greater than 2.5, such as between 0.2-2.5 or between 0.8-2.5.

Alternatively or in addition, in the contact procedure of main mix stages, when bulk density calculated is 40≤bulk density< During 80g/l, the compression ratio R of organic natural fiber material is not more than 4, such as between 0.2-4, more preferably no more than 3, and for example exist Between 0.2-3 or between 0.5-3, most preferably no greater than 2.5, such as between 0.2-2.5 or between 0.8-2.5.

Preferably, in the contact procedure of main mix stages, when apparent bulk density is 80≤bulk density<150g/l When, the compression ratio R of organic natural fiber material is not more than 3.0, such as between 0.2-3, more preferably no more than 2.5, and for example exist Between 0.2-2.5 or between 0.5-2.5, most preferably no greater than 2.0, such as between 0.2-2 or between 0.8-2.0.

Alternatively or in addition, in the contact procedure of main mix stages, when bulk density calculated is 80≤bulk density< During 150g/l, the compression ratio R of organic natural fiber material is not more than 3.0, such as between 0.2-3, more preferably no more than 2.5, For example between 0.2-2.5 or between 0.5-2.5, most preferably no greater than 2.0, such as between 0.2-2.0 or 0.8-2.0 it Between.

Preferably, in the contact procedure of main mix stages, when apparent bulk density is 150≤bulk density<300g/l When, the compression ratio R of organic natural fiber material is not more than 2.5, such as between 0.2-2.5, more preferably no more than 2.0, for example Between 0.2-2.0 or between 0.5-2.0, most preferably no greater than 1.5, such as between 0.2-1.5 or between 0.8-1.5.

Alternatively or in addition, in the contact procedure of main mix stages, when bulk density calculated is 150≤bulk density< During 300g/l, the compression ratio R of organic natural fiber material is not more than 2.5, such as between 0.2-2.5, more preferably no more than 2.0, such as between 0.2-2.0 or between 0.5-2.0, most preferably no greater than 1.5, such as between 0.2-1.5 or 0.8-1.5 Between.

Preferably, in the contact procedure of main mix stages, when apparent bulk density is at least 300g/l, such as 300≤ Bulk density<During 700g/l, the compression ratio R of organic natural fiber material is not more than 2.0, such as between 0.2-2, more preferably not More than 1.5, such as between 0.2-1.5 or between 0.5-1.5, most preferably no greater than 1.2, such as between 0.2-1.2 or Between 0.8-1.2.

Alternatively or additionally, in the contact procedure of main mix stages, when bulk density calculated is at least 300g/l, for example 300≤bulk density<During 700g/l, the compression ratio R of organic natural fiber material is not more than 2.0, such as between 0.2-2, more Preferably no greater than 1.5, such as between 0.2-1.5 or between 0.5-1.5, most preferably no greater than 1.2, for example 0.2-1.2 it Between or 0.8-1.2 between.

Preferably, in contact procedure 36a of main mix stages 36, when apparent bulk density is less than 10g/l, You Jitian Right fibrous material 11, the bulk density calculated of 11a is less than 80g/l, more preferably less than more preferably less than 60g/l, 40g/l.

Preferably, in the contact procedure of main mix stages, when apparent bulk density is 10≤apparent bulk density<20g/ During l, the bulk density calculated of organic natural fiber material is less than 160g/l, more preferably less than more preferably less than 120g/l, 80g/ l。

Preferably, in the contact procedure of main mix stages, when apparent bulk density is 20≤apparent bulk density<40g/ During l, the bulk density calculated of organic natural fiber material is less than 240g/l, more preferably less than more preferably less than 160g/l, 120g/ l。

Preferably, in the contact procedure of main mix stages, when apparent bulk density is 40≤apparent bulk density<80g/ During l, the bulk density calculated of organic natural fiber material is less than 320g/l, more preferably less than more preferably less than 240g/l, 200g/ l。

Preferably, in the contact procedure of main mix stages, when apparent bulk density is 80≤apparent bulk density< During 150g/l, the bulk density calculated of organic natural fiber material is less than 450g/l, more preferably less than 375g/l, more preferably less than 300g/l。

Preferably, in the contact procedure of main mix stages, when apparent bulk density is 150≤apparent bulk density< During 300g/l, the bulk density calculated of organic natural fiber material is less than 750g/l, more preferably less than 600g/l, more preferably less than 450g/l。

Preferably, in the contact procedure of main mix stages, when apparent bulk density is at least 300g/l, such as 300≤ Apparent bulk density<During 700g/l, the bulk density calculated of organic natural fiber material is less than Isosorbide-5-Nitrae 00g/l, more preferably less than 1050g/l, more preferably less than 840g/l.

Preferably, the bulk density calculated of organic natural fiber material is less than 5 times of apparent bulk density, more preferably less than 3.5 times of apparent bulk density, more preferably less than the 2 of apparent bulk density times.

Preferably, the bulk density calculated of organic natural fiber material is at least 0.4 times of apparent bulk density, more preferably It is at least 0.5 times of apparent bulk density, most preferably at least 0.6 times of apparent bulk density.

Preferably, at least a portion following steps are included according to the method for the present invention：

- by organic natural fiber material 11,11a is introduced in system,

- host material 12 is introduced in system,

- crushed (23) organic natural fiber material in advance before main mix stages, loose material is formed,

- before main mix stages 36 the organic natural fiber material of pre-separation (24),

- before main mix stages 36 the organic natural fiber material of premixing (21,21a),

- chemical treatment is carried out to organic natural fiber material before main mix stages 36,

- before main mix stages 36 the organic natural fiber material of premixing (21,21b) and unfused host material,

- host material is melted at least in part,

- host material of at least part of fusing is contacted with organic natural fiber material, preferably start in the contact procedure Shi Youji natural fiber materials be it is loose,

- host material of at least part of fusing is mixed with organic natural fiber material in main mix stages, to be formed Mixture,

- form (39a) joint product 40,40a, 40b comprising the mixture.

Host material 12 is made before the contact procedure of main mix stages 36 or in contact procedure 36a with organic natural fiber Material 11,11a contacts with each other.If host material 12 and organic natural fiber material 11,11a are in the contact of main mix stages 36 Contact before step 36a, then the contact procedure will not start, until host material at least starts fusing, i.e. at least 10 weight % Host material be melt form.

Preferably, the mixture 15 of the host material comprising organic natural fiber material and fusing is formed so that in contact In step process under conditions of without the need for compression, organic natural fiber material is had been integrated in the host material for melting.It is preferred that Ground, does not consider mixed method and mixed type, and the mixing of main mix stages is carried out under conditions of without compression.But, at one In embodiment, heating and adding pressure to form joint product by mixture.

Preferably, the method by being selected from the group forms the joint product 40 comprising mixture 15：Extrusion, granulating, mixing Method, pelletization and combinations thereof.In one embodiment, joint product can be formed in the following manner：It is mixing arrangement, interior Portion's blender, kneader, pelletization machine, pultrusion method, drawing drill method and/or extrusion device.Preferably, by being molded formation Joint product.Alternatively or in addition, by being extruded into joint product.

At least in the contact procedure of main mix stages 36a, at least partly melt form of host material 12 connects at this Organic natural fiber material and melt matrix material contacts in tactile step.In main mix stages 36, organic natural fiber material By host material moistening.

Contact procedure 36a represents the process station of organic natural fiber material and the matrix material contacts of at least part of fusing Or region.Preferably, host material is melt form during the contact procedure, i.e., at least in contact procedure, host material For melt form, organic natural fiber material and melt matrix material contacts in the contact procedure.Therefore, in main mix stages Contact procedure before, preferred pair host material is heated so that the temperature of host material be higher than glass transition temperature, or If person's host material has fusion temperature, host material is heated to above into glass transition temperature and fusion temperature. In fusion process, phase transformation is to be changed into melt from solid.

Main mix stages are preferably a part for continuous processing.But, main mix stages can be with real in batch technology Apply.

Before the contact procedure of main mix stages starts, organic natural fiber material is preferably loose, the i.e. material With predetermined bulk density level.

Preferably, the fiber of organic natural fiber material was crushed before contact procedure, loose organic natural fibre is formed Dimension material compositions.It is therefore preferable that being carried out to organic natural fiber material using crushing machine 28 before main mix stages 36 pre- Crushing processes (23), to form loose material 11a.Preferably, in other pretreatment such as chemical treatment 25 and/or pre-separation 24 Pre- crushing 23 is carried out before.Alternatively or in addition, pre- crushing is carried out after chemical treatment 25 and/or pre-separation 24.At one In embodiment, fibre bundle was discharged before contact procedure 36a of main mix stages 36, the operation can be by least one pressure Crushing device 28 is carried out.Preferably, after crushing, fibrous material at least partly sheet form.

Discrete material have the technical effect that smoothness, can flow, not arch camber.In addition, fiber and/or fibrous material can Equably to spread in host material.Additionally, the moistening of fiber can be carried out equably.

Pre- crushing 23 can be carried out in one or more crushing steps by one or more crushing method.Can be by this Any appropriate method carries out crushing 23 known to art personnel.Herein, crushing 23 mean any crushing, grinding, Sorting, crushing and combinations thereof.

In one embodiment, by the way that pre- crushing 23 is carried out to organic natural fiber material selected from following method：Base In the grinding of crushing, based on the grinding of abrasion, based on the grinding of friction, based on the grinding of cutting, based on the grinding of sandblasting, it is based on The grinding of blast, wet grinding, dry grinding grinds under stress and combinations thereof.Preferably, by based on crushing Grinding and/or the grinding based on cutting crush organic natural fiber material.Or, pre- crushing is carried out to organic natural fiber material 23 so that during managing in this place, fiber is separated and cut.Therefore, most preferably by cutting and grinding to organic natural Fibrous material 11 carries out crushing and processes 23.

Preferably, impact mill, gas blowout formula grinding machine, sand mill, grain grinding machine (bead mill), ball mill (pearl Mill), ball mill, vibration mill and/or screw rod grinding machine are used for pre- crushing operation 23.

Preferably, pretreatment is carried out to organic natural fiber material at least one pretreatment stage 20.Preferably, institute State system included at least one pretreatment stage 20 before contact procedure 36a of main mix stages 36.If system includes pre- The crushing stage 23, then also there is at least one extra pretreatment preferably after crushing step 23 and before main mix stages 36 Stage 20.

In pretreatment stage, organic natural fiber material not with the matrix material contacts of at least part of fusing.Therefore, divide It is other organic natural fiber and host material are carried out only have one kind in pretreatment, or both materials carry out pretreatment, and/ Or organic natural fiber material carries out pretreatment with solid matrix materials.

Used as the replacement or supplement of pre- crushing 23, pretreatment stage 20 may include for example：

- drying steps,

The pre-mixing process 21a of-organic natural fiber material,

The pre-mixing process 21b of-organic natural fiber material and unfused host material,

- heating stepses,

- contact procedure, and/or

- chemical pretreatment step 25.

In one embodiment, pretreatment stage 20 includes heating, cooling, mixing, aggregation, pre- granulating and/or granulation Step.The order of pretreatment can change.

In one embodiment, less than 100 bars, more preferably less than 80 bars, less than 60 bars, less than 50 bars, less than 40 Bar or less than 30 bars or less than 20 bars, more preferably less than 15 bars, less than 10 bars, less than 8 bars, less than 6 bars, less than 4 bars or less than 3 Bar, most preferably less than 2.5 bars or less than carrying out pretreatment to fibrous material under the atmospheric pressure of 2.0 bars.Organic natural fiber material Pressure (such as in closed vessel) around material can be very high, as long as organic natural fiber material will not be compressed too strict Evil.In other words, usual bulk density is only important factor, rather than simply only considers air pressure.

The pressure of organic natural fiber material was compressed before the contact procedure of main mix stages (i.e. in preprocessing process Compress the pressure of organic natural fiber material) it is preferably smaller than 4 bars or less than 3 bars, more preferably less than 2.5 bars or less than 2.0 bars, most Preferably smaller than 1.5 bars.

In an illustrative embodiments, before main mix stages 36, at least one of organic natural fiber material Material carries out premix 21,21a so that the fiber aggregate disintegrate as much as possible in mixed process, but fiber will not be cut.In advance Mixed method may include but be not limited to blender, food mixer, concrete mixer and fluidization technique.In an embodiment In, by heating mixer, cooling mixer, internal mixer such as Banbury, continuous mixing device and/or some other suitable Device carries out premix 21,21a, 21b.

In one embodiment, by host material and organic natural fiber material premix 21 in pre-treatment step 20, 21b.In this case, host material is non-fusible, but mutually premixes the material when host material is solid form.

In one embodiment, in the case where not being compressed to fibrous material, organic natural fiber material is made first The fiber of material mutually premixes 21a, then makes fibrous material premix 21b with unfused host material in the case of without compression, So that the mixing of organic natural fiber material and host material will not form combination between the fiber of organic natural fiber material.

In one embodiment, in order to improve adhesiveness, with chemical reagent pair preferably in the case of without heavy compression The fiber of organic natural fiber material carries out pretreatment 25.Preferably, lubricant, wax, bulking agent, ionic surfactant, Nonionic surfactant, silane, anhydride and/or carboxylic acid are used for Chemical Pretreatment.Alternatively or in addition, it is possible to use can carry Other chemical reagent of adhesiveness between the moistening of high microsteping or organic natural fiber material and host material, particularly when The chemical reagent is to be liquid form or gas form or melt form below the temperature of solid form in host material.

Preferably, pretreatment 20 includes drying steps, and in this step the dry matter content of organic natural fiber material increases Greatly.Preferably, after pre-processing, the water capacity of organic natural fiber material is preferably smaller than 7%, little less than 5% less than 6% In 4%, or less than 3%, more preferably less than 2.5%, less than 2.0%, less than 1.5% or less than 1.0%, more preferably less than 0.8% or less than 0.5%.

In one example, pretreatment 20 includes chemical treatment 25 and drying steps, before the drying step or is dried step Chemical treatment is carried out during rapid.

Preferably, before fiber moistening before contact procedure 36a of main mix stages and wherein, in pre-separation rank The fiber of organic natural fiber material is separated in section 24 (i.e. classification/selection).

In this application, main mix stages 36 represent a processing step, and the step is in organic natural fiber material and extremely When small part is the matrix material contacts of fusing form, in organic natural fiber material completely or generally all by substrate Material moistening, or the surface of organic fibrous material be enough to after press the material by the degree that host material is covered Stop when adhesion during contracting between fiber is avoided by.Preferably, after main mix stages 36, in joint product 40, At least 40% or at least 50%, more preferably at least 60% or at least 70%, most preferably at least 80% or at least 90% organic day So fibrous material surface is covered by host material.

Therefore, main mix stages 36 and contact procedure 36a therein are in organic natural fiber material 11,11a and substrate material When material 12 contacts with each other, host material is fusing or starts fusing, therefore it is organic natural to start moistening in host material Start main mix stages 36 during fibrous material surface.Therefore, if host material is solid form, before main mix stages Organic natural fiber material just can contact with each other with host material.

Preferably, main mix stages at least last till that polymer is completely melt.In other words, mixing at least lasts till organic day So the fiber of fibrous material cannot be fettered mutually again.Now, fibrous material and additive are disperseed by polymer melt.It is multiple being formed During closing product 40, the uniform composite of preferred pair is cooled down, until material is entirely solid.

In contact procedure 36a and/or before it will carry out contact procedure, organic natural fiber material containing wet Amount preferably smaller than 7%, less than 6%, less than 5%, less than 4%, or less than 3%, more preferably less than 2.5%, it is little less than 2.0% In 1.5% or less than 1.0%, more preferably less than 0.8% or less than 0.5%.It is such to have the technical effect that organic natural fiber material The moistening of material, the mixing and adhesion between host material and organic natural fiber material is improved, and can be avoided organic natural The flocculation of fibrous material, this is because in this case, coupling agent will not react first with water, but with organic natural fiber material Material reaction.

Organic natural fiber material mixes with the host material of fusing, is formed and includes at least organic natural fiber material With the mixture of host material.Preferably, during mixing 36b, host material is melt form, until substantial amounts of fiber table Face by host material moistening, preferably at least 30%, at least 40%, at least 50%, at least 60%, at least 70%, at least 80% or At least 90% fiber surface is by host material moistening.

Preferably, the pressure for using should cause that combination will not be formed between fiber, i.e., between the fiber of fibrous material not Being formed carries out the mixing of the raw material based on fiber and host material in the case of combining.In a preferred embodiment, at least exist Without compression or only in the case of mild compression, preferably do not applying apparently higher than under the pressure of atmospheric pressure to be attached to fibrous material In host material.Preferably, fibrous material is mixed with host material in the case of without compression, form mixture.

During the contact procedure of main mix stages, the pressure for compressing organic natural fiber material is preferably smaller than 5 Bar, less than 4 bars or less than 3 bars, more preferably less than 2.5 bars, less than 2.0 bars, less than 1.5 bars or less than 1.0 bars, more preferably less than 0.5 bar, less than 0.3 bar, less than 0.2 bar or less than 0.1 bar.

Preferably, in main mix stages 36, organic natural fiber material slightly mixes with host material, forms mixing Thing so that carry out in the case of being blended in without heavy compression, organic natural fiber material is uniformly distributed in mixed volume, excellent Choosing is uniformly distributed in the free volume of Mixed Zone.

For example, it is mixed using machine, extruder, heating mixer and/or heating/cooling is mixed in Z-shaped blade mixer, batch-type Clutch carries out the blend step 36b of main mix stages.Preferably, using the blender for including heated zones.Blender is preferably wrapped A section is included, at least a portion can be removed from the moisture of raw material in the section.Organic natural fiber material can be made Material mixes with host material and assembles, and forms evenly or substantially uniform mixture.Fiber content can be adjusted in a wide range, can Easily to realize high-load.

Can be to organic natural fiber material, host material and/or comprising host material and organic natural fiber material Suitable and required additive is added in mixture.Preferably, using at least one additive comprising following component：

- property reinforcing agent,

- coupling agent,

- cohesive promoting agent,

- lubricant,

- rheology modifier,

- releasing agent,

- fire retardant,

- coloring agent,

- anti-mildew compound,

- protective agent,

- antioxidant,

- UV stabilizer,

- foaming agent,

- firming agent,

- auxiliary agent, and/or

- catalyst.

Preferably, using at least one filler comprising following component：Fibrous material, organic filler such as starch or protein Or some organic remains, inorganic filler, powder reinforcing agent, Calcium Carbonate and/or Talcum.Calculated by the gross weight of joint product, The gross weight of filler is preferably smaller than 50 weight %, more preferably less than more preferably less than 40 weight %, 30 weight %.

Preferably, at least one additive and/or at least one filler be added to comprising organic natural fiber material and In the mixture of host material.Most preferably, coupling agent is included in the polymer coupling agent in host material.

In an embodiment of the invention, before the contact procedure of main mix stages, organic natural fiber material At least partly sheet form.In one embodiment, the fibrous material of any sheet form can serve as organic natural Fibrous material or the part as organic natural fiber material.

Preferably, in main mix stages, and at least in the contact procedure of main mix stages, preferably in vacuum or deposit Material mixing is made in the case of gases.If using gas, preferably the gas includes air and/or nitrogen and/or helium, Or be made up of air and/or nitrogen and/or helium.

In one embodiment, joint product 40 is particle form.This joint product is typically middle joint product 40a.In this application, composite particles represent any particulate, agglomerate, pill or the like.It is preferred that by granulation, granulation Method, aggregation method or combinations thereof form the joint product of particle form.

Preferably, joint product 40,40a, 40b is fine-grained form.In one embodiment, the side by being selected from the group Method carries out granulating：Water ring, forming medicine pills in water, air cooling, hot face stock and combinations thereof.In one embodiment, granulating exists Carry out under water.In one embodiment, granulating is carried out by back-pressure mode for example with method under water.

In one embodiment, by extrusion or any other suitable method directly by comprising organic natural fiber material The mixture 15 of material and host material forms particulate.In one embodiment, particulate is formed by middle joint product 40a, institute State middle combination product to be formed by mixture 15 by extrusion or any other suitable method.

The main task of granulating or pelletization is the particulate of the homogeneous free-flowing of production, generally for being processed further.One In a little techniques, for example, extrude and be molded, it is desirable to which the particulate of easily dimmable dosage is in order to being produced well.Using organic day So during fiber, pre- granulating is generally more important.Natural fiber plasticity particulate can be manufactured using distinct methods.

Production particulate has two important goals：It is compounded and is formed particulate.The two targets using a machine or can make Realized with different machines.The method of simplest production natural fiber-polymer fine particles is to use a machine or a set of Machine assembly carrys out compound material component and makes this material form particulate.One example of this machine has been equipped with granulating instrument Compounding double screw extruder.

Equipment 39 for forming joint product can also be used for main mix stages 36.For forming the equipment 39 of joint product Preferably extruder.

In the case of composite particles, material component is supplied in compounding extrusion machine in screw rod starting point, so as to the greatest extent may be used Can soon start melting.Material component can be such as host material, such as plastics, organic natural fiber material, additive and Filler.

In some cases, organic natural fiber material or a part of organic natural fiber material can after a while be supplied in order to avoid fibre Dimension rupture.For example, in extruder fiber is added also to affect the dispersion of fiber and plastics after a while.Generally mainly made by friction Polymer melt is obtained, but is possible with some external heat.Polymer, additive and fiber are preferably being moved through screw tube During mix.Melt compounded thing can be pressed through granulating instrument, such as forming medicine pills in water machine is formed particulate.

It is preferred that forming joint product 40 with extruder and carrying out the compounding of material.Extruder be divided into single screw rod, twin screw or Multiscrew machine.Single screw rod can be equipped with smooth, cutting or syringe type machine.Double screw extruder can be that taper rotates forward double spiral shells Bar extruder, taper are to turning double screw extruder, parallel positive rotaring twin-screw extruder or parallel to turning double screw extruder.It is many Screw extruder can be equipped with rotation or static state central shaft.

Addition or alternatively, the compounding of joint product 40 and material can be also formed using for example following blender：It is interior Portion's blender, heating-cooling blender or z shape blade mixers, or using any mixing arrangement for meeting following condition come Realize：Using friction or internal heating and/or external heat come melt polymer and by fiber and polymer and other components With reference to.Mixing can be intermittently or serially technique.Can be mixed by the slow-speed of revolution or high rotating speed；Low speed is preferably at least 10rpm, and for example it is less than 2000rpm.Can be using any these techniques or these techniques and some other processing steps Combine to form the compounding of joint product 40 and material.Any blender or extruder may include that some are directly contained in extruder Or in blender or before or after extruder close vicinity connection pretreatment or post processing.Preferably, in continuous processing In, shredding, drying and/or mixing can be joined directly together with extruder.

It is usually used with extruder or the granulating instrument of Melt Pump connection to form particulate, piller or similar compound product Product.Granulating instrument can be cold surface cutting machine or hotlist cutter.One of suitable cold surface cutting machine granulating instrument Example is strands pelletization machine.In hotlist cutter, the particulate of melting form is cut in template.For example, suitable hotlist Cutter pelletization unit can be divided three classes：Cut in atmosphere and cool down, cut in water and cool down or cut in atmosphere And cool down in water.

Preferably, main mix stages are carried out with extruder.In this case, after main mix stages, preferably also use Extruder forms joint product, such as piller or particulate.

Preferably, the mixture 15 comprising organic natural fiber material 11,11a and host material 12 is extruded. In one embodiment, mixture 15 is extruded after at least one pretreatment.In one embodiment, in crushing Afterwards organic natural fiber material is direct supplied to into expressing technique.In one embodiment, first by host material with it is organic Natural fiber material mixes, and is then extruded in the case of without pretreatment stage.

In the case of extrusion, can be using any suitable single screw extrusion machine or double screw extruder, such as to turning double Screw extruder or positive rotaring twin-screw extruder.Double screw extruder can have parallel or taper screw configuration.In a reality In applying mode, different pelletization instruments can be used in combination with extruder.In one embodiment, the stage is extruded including granulating Step.In one embodiment, granulation step arrangement is carried out after extrusion.In one embodiment, granulation step It is the separate phases carried out after the extrusion stage.

In one example, by the melt conveying comprising organic natural fiber material and the mixture 15 of host material to just In turning parallel double-screw extruder, it is pumped in template by melt, forms mixture stock.It is preferred that stock cooling after make its into Grain.In one example, conical double screw extruder is rotated forward for complex production.For example, in the screw body of screw rod starting point Product is bigger 4-8 times than the screw rod volume of extruder end.

In a preferred example, using extruder joint product, such as particulate are formed.In extrusion, squeezing Go out in step and the mixture 15 comprising organic natural fiber material and host material is extruded, preferably enter in granulation step Row granulating.In granulating preferably by back-pressure.

One example of extrusion is compounded with the positive rotaring twin-screw extruder for being equipped with strands pelletization.In this case, Material component is supplied in the main feed of compounding extrusion machine in screw rod starting point, so as to start melting as quickly as possible.

One example of extrusion is compounded to turning double screw extruder with the taper for being equipped with forming medicine pills in water instrument.Here In situation, material component is supplied in the main feed of compounding extrusion machine in screw rod starting point, so as to start to melt as quickly as possible Melt.

One example of extrusion is compounded with the single screw extrusion machine for being equipped with sieve unit and water ring pelletization instrument. In this situation, material component is supplied in the main feed of extruder in screw rod starting point, so as to start melting as quickly as possible.

The maximum delivery capacity of extruder can be estimated according to following formula：

V'_{Idle running}=nTA_FreelyFormula (5)

Wherein n is rotating speed (1/s), and T is pitch, A_FreelyIt is the free cross-section area of extruder.

Plastic melt is adhered on barrel, therefore the delivered volume of reality is less than ideal situation.This can be estimated according to following formula Plant delivered volume of the material according to many thread contour no pressure conveyings：

V'_Estimation=0.5nTA_FreelyFormula (6)

The information that machine suppliers or document can be based on is calculated in parallel positive rotaring twin-screw extruder screw using volume Or area of section.For two-flight screw design, the free cross-section area of this extruder can be calculated according to following formula：

Wherein D_aIt is the external diameter of screw rod, x₂It is the coefficient of the two-flight screw according to the area of section figure of R.Erdmenger.

If we estimate that the bulk density of the fiber for being transported to extruder is identical with apparent bulk density, we can be with The volume flow that fiber flows into machine is calculated according to following formula：

Wherein, m_FiberIt is the mass flow of fiber, ρ_{It is apparent}It is the apparent bulk density of fibrous material.

When fiber is added into extruder with maximum capacity, we can assume that the volume of conveying similar to V_{Idle running}(formula 5)。

The present invention provides the joint product with good mechanical properties.Preferably, joint product is natural fiber-polymer Joint product.In one embodiment, joint product includes the material and host material based on timber.

The theory of composite/calculating density (ρ_t) by the quality and density of various components according to following formula calculating：

Wherein m₁、m₂And m_nThe quality of the various components of composite, such as it is compound comprising fibrous material and host material Product or mixture, ρ₁、ρ₂And ρ_nThe density of the various components of composite, such as comprising fibrous material and host material Joint product or mixture.

Preferably, the theory of the mixture for constituting comprising fibrous material and host material or by fibrous material and host material Density is 930-1600 kilograms per cubic meter, preferably 1000-1500 kilograms per cubic meter.Component of the solid density according to mixture Change with their density.

Preferably, the density of joint product is 0.90-1.6g/cm³, or 0.93-1.5g/cm³, more preferably 0.95- 1.30g/cm³, or 0.97-1.20g/cm³, most preferably 1.00-1.15g/cm³。

Preferably, the density of mixture is at least the 85% of solid density, and preferably greater than 90%, more preferably greater than 95%, Most preferably greater than 98%.In one embodiment, the density of mixture is almost the 99.9% of solid density.

Preferably, the density of joint product is at least the 85% of solid density, and preferably greater than 90%, more preferably greater than 95%, most preferably greater than 98%.In one embodiment, the density of joint product is almost the 99.9% of solid density.

Preferably, the density of the joint product of fine-grained form is 0.90-1.3g/cm³, more preferably 0.95-1.2g/cm³, most Preferably 0.97-1.15g/cm³。

Preferably, if the amount of organic natural fiber material of fine-grained form is less than 40 weight %, fine-grained form it is compound The density of product is 0.90-1.10g/cm³, more preferably 0.95-1.10g/cm³, most preferably 0.97-1.08g/cm³。

Preferably, if the amount of organic natural fiber material of fine-grained form is 40-50 weight %, fine-grained form it is compound The density of product is 0.95-1.20g/cm³, more preferably 0.97-1.15g/cm³, most preferably 1.00-1.10g/cm³。

Preferably, if the amount of organic natural fiber material of fine-grained form is at least 50 weight %, fine-grained form is answered The density for closing product is 0.95-1.30g/cm³, more preferably 1.00-1.20g/cm³, most preferably 1.03-1.15g/cm³。

The hole formed in joint product causes the density of the product to reduce.Ideally, do not have in joint product Unwanted hole.No matter in fact, how outstanding processing mode is in terms of hole formation is reduced as far as possible, all there may be one Some holes gap.Therefore, using density as a kind of quantitative number for characterizing organic natural fiber-thermoplastic polymer joint product According to.Joint product can be characterized by its theory/calculating density and its experiment density.

Term " pore volume " represent compared with object cumulative volume, in object gas volume formed partial volume summation. In one embodiment, the pore volume of mixture and/or joint product is less than 10%, preferably smaller than 5%, more preferably less than 2%, more preferably less than 1%.

Organic natural fiber material has the feature of water suction.Water absorption depends on the condition of surrounding materials.Cellulose fibre Can quickly absorb water, but when fiber is covered by hydrophobic matrix material, water suction is substantially slack-off.Absorption rate is depended on The feature of host material, the content of organic natural materials, but other factorses such as additive can also improve or reduce absorption rate.

Preferably, in 48 hours (65% relative humidity and 27 DEG C of air), dry joint product 40,40a, what 40b absorbed Moisture less than joint product weight 1.5%, less than 1.0% or less than 0.85%, more preferably less than 0.7%, less than 0.6% or Less than 0.5%, most preferably less than 0.4%, less than 0.3%, less than 0.2% or less than 0.15%.

Joint product 40,40a, 40b can be fine-grained forms.In this case, the size of preferred particulate is in same range It is interior.The weight of particulate is preferably 0.01-0.10 gram, and in one embodiment weight is bigger, in one embodiment weight It is less.It is preferred that the weight of particulate is 0.015-0.05.The weight of 100 particulates is preferably 1-10 gram.It is preferred that the weight of 100 particulates Measure as 1.5-5 gram.More preferably the weight of 100 particulates is 2.0-4.0 gram.Standard deviation is preferably smaller than 15%, more preferably less than 7%, more preferably less than 2%.

In one embodiment, by organic natural fiber material, (amount is 5-95 weight %, preferably 10-60 weight % Or 15-40 weight %) and polymer (amount is 5-95 weight %, preferably 30-90 weight % or 40-80 weight %) and additive (amount is 0-50 weight %, preferred 0-30 weight % or 5-20 weight %) mixing, is then for example added to extruder by mixture In.

The invention provides being combined by joint product 40a in the middle of organic natural fiber material and host material manufacture and finally Product 40b's can commercial Application, the simple and method that can bear.The method according to the invention is easily to realize and simple production Method.

The method according to the invention is applied to from the different products of different organic natural fiber material manufactures.

If the size for the machine of method is too little, even if bulk density calculated is relatively low, key component is host material Would be more difficult with the charging of organic natural fiber material.In addition, the machine of oversized dimensions will cause mixed effect poor or it Its shortcoming.Therefore, if using extruder, the preferably extruder screw diameter in feed zone is at least 30mm, at least 40mm, or at least 50mm, more preferably at least 60 or at least 70mm, most preferably at least 90mm or at least 110mm.It is in addition or another Selection of land, in the extruder screw diameter of feed zone 550mm or no more than 500mm, more preferably no more than 450mm are preferably no greater than Or no more than 400mm, no more than most preferably no greater than 350mm or 300mm.If replacing extruder using batch technology or making Other continuous processings are used, then free volume used is more preferably at least 200 liters, at least 400 liters or at least 500 liters, more preferably extremely It is few 600 liters or at least 800 liters, most preferably at least 1000 liters or at least 1500 liters.

Preferably, the production capacity for the equipment of manufacture method be at least 300 kgs/hr or at least 400 kilograms/it is little When, more preferably at least 500 kgs/hr or at least 700 kgs/hr, more preferably at least 1000 kgs/hr or at least 1500 kgs/hr.

Have benefited from the method for the present invention, particulate of uniform free-flowing, etc. can be provided.Another kind has the technical effect that Production particulate is for being processed further.It is often important that realizing between organic natural fiber material and host material good Compounding.

In one embodiment, joint product is intermediate products, such as piller or particulate, and they are preferred for manufacture most Finished product.In another embodiment, joint product of the invention is final products.Can be for example, by following any suitable Method is by middle joint product such as particulate manufacture final products：Injection, film casting, blowing, rotational moulding, hot forming, compression moulding, squeeze again Go out, type face extrusion, sheet material extrusion, thin film extrusion and/or fiber extrusion, etc..In one embodiment, using joint product Particulate forming final products.In one embodiment, finishing process is carried out to particulate.Finishing process to particulate includes Such as drying, dedusting, classification and/or packaging.

It is preferred that forming the joint product as final products by the method being selected from the group：Injection, extrusion and their group Close.In one embodiment, final products are formed by injection.In a preferred embodiment of the present invention, by squeezing Go out to form joint product.In one embodiment, the combination by extruding and be molded forms joint product.

Joint product includes the mixture containing organic natural fiber material and host material.It is preferably based on compound product The gross weight of product is calculated, and the amount of mixture is at least 20 weight % or at least 35 weight % in joint product, more preferably at least 45 weight % or at least 60 weight %, at least most preferably at least 70 weight % or 80 weight %.Preferably, joint product is by described Mixture is constituted.Preferably, the amount of organic natural fiber material and host material is adjusted in mixing.

Preferably, joint product of the invention includes 10-80 weight % or 12-70 weight %, more preferably 14-60 weight % Or organic natural fiber material of 16-50 weight %, most preferably 18-40 weight % or 20-30 weight %.

Preferably, at least 50 weight % or at least 70 weight % in joint product, more preferably at least 80 weight % or at least Organic natural fiber material of 90 weight %, most preferably at least 95 weight % is from mixture 15.

Preferably, joint product of the invention includes 5-95 weight %, more preferably 20-90 weight % or 30-85 weight %, The most preferably host material of 40-80 weight %.

Preferably, the total amount of joint product of the invention comprising additive and/or filler, the additive and filler is 0- 50 weight %, more preferably 0.5-40 weight %, most preferably 1-30 weight %.

In an embodiment of the invention, in the case of undeliverable toner, joint product is light color.Preferably, exist Need not be using pigment and coloring agent in the joint product of the present invention.Light color means that natural fiber does not have obvious degradation.

Preferably, joint product has good dispersion.Dispersion is to describe other components and host material (preferred polymers Substrate) good mixing degree term.Fine dispersion means that all other component is all evenly distributed in material, owns Solid constituent is separated from each other, i.e., all granules or fiber are surrounded by host material.

Preferably, joint product 40 forms a part for following object or following object：

- deck,

- floor,

- wallboard,

- railing,

- bench, such as park bench,

- refuse bin,

- flowerpot,

- fence,

- Garden wood,

- covering,

- side plate,

- window frame,

- doorframe,

- indoor furniture,

- building,

- acoustic element,

- parcel,

The part of-electronic device,

- outdoor structure,

The part of-vehicle such as automobile,

- for the road cane that sweeps away snow,

- instrument,

- toy,

- kitchen utensils,

- cooking device,

- white goods,

- outdoor furniture,

- traffic signss,

- sports equipment,

- container, tank and/or disk, and/or

- lamppost.

Product is prepared using the inventive method cost-effective and energy efficient of energy from organic natural parent material.

Embodiment

The present invention is described in further detail in following examples.

Embodiment 1

In the present embodiment, as shown in fig. 1, by organic natural fiber material 11,11a and the substrate material based on polymer Material 12 defines joint product 40.Organic natural fiber material is based on the material of Betula wood pulp.Substrate material based on polymer Material is polyethylene.

Organic natural fiber material is crushed (23) by the Ginding process being selected from the group：Based on the grinding of crushing, it is based on The grinding of abrasion, based on the grinding of friction, based on the grinding of cutting, based on the grinding of sandblasting, based on the grinding of blast, wet method is ground Mill, dry grinding, under stress grinding and combinations thereof, form organic natural fiber material.In one embodiment, Fibrous material is crushed by (23) by the grinding based on crushing.In one embodiment, by cutting and grinding by fibrous material Crushing.Preferably, fibrous material is crushed so that fiber is separated and cut out from organic natural fiber material.In a kind of enforcement In mode, the lapping device for milled fibre material is selected from：Impact grinder, air-spray grinder, sand mill, grain mill Machine, ball mill, ball mill, oscillating mill, screw abrasive machine and combinations thereof.One or more grinding side can be passed through Method is ground in one or more grinding steps.In one embodiment, by grinding in one or more steps Fibrous material is forming fibrous material.Preferably, by cutting and grinding to organic natural fiber material 11,11a is carried out at crushing Reason 23.Before the contact procedure of main mix stages 36, the fiber of organic natural fiber material, shape are separated in separation phase 24 Into loose organic natural fiber material compositionss 40.In the contact procedure of mixing, organic natural fiber material compositionss 40 Compression ratio be up to 8.

In main mix stages 36, by organic natural fiber material 11, the fiber of 11a and the host material based on polymer 12 mix to form mixture (15) under conditions of compression is not applied.At least in the contact procedure 36 of main mix stages, base Configured with melt form in the material 12 of polymer, organic natural fiber material is based on polymer with being somebody's turn to do in the contact procedure Melted material is contacted.In blend step, in the presence of the air, make organic natural fiber material light with the material based on polymer Microring array, forms mixture so that being blended in the case of do not apply compression is carried out, and organic natural fiber material is evenly distributed To in mixed volume, organic natural fiber material is by the material moistening based on polymer.

Middle joint product 40a is formed by the mixture by extrusion.Middle joint product 40a is fine-grained form.

For example final joint product 40b is formed by the middle joint product particulate by another extrusion step.

Embodiment 2

In the present embodiment, as shown in Figure 2, by organic natural fiber material 11,11a and the substrate material based on polymer Material 12 defines joint product.Organic natural fiber material is based on the material of pinaster wood pulp.Host material based on polymer It is polyethylene.

Crushing (23) organic natural fiber material, forms loose organic natural fiber material 11a, crushing operation 23 it Afterwards, organic natural fiber material is transported in heating married operation, that is, in being transported to the married operation of temperature raising, herein To be added in fibrous material based on the host material of polymer.By the base comprising organic natural fiber material and based on polymer The mixture 15 of material was supplied in the extrusion stage, and joint product 40 is formed in this stage.

Embodiment 3

In the present embodiment, as shown in Figure 3, by extruding the stage by comprising organic natural fiber material 11,11a and base Joint product 40 is formed in the mixture 15 of the host material 12 of polymer.

In the extrusion stage, mixture 15 is extruded first in extrusion step 39a, then in granulation step 39b In carry out granulating.The back-pressure used in granulation step.

Embodiment 4a

One example of extrusion is compounded with the parallel positive rotaring twin-screw extruder for being equipped with strands pelletization.Rise in screw rod Material component is supplied in the main feed of compounding extrusion machine at point, so as to start melting as quickly as possible.

Embodiment 4b

One example of extrusion is compounded with the parallel positive rotaring twin-screw extruder for being equipped with forming medicine pills in water instrument.In spiral shell Bar starting point is supplied to the host material and additive based on polymer in the main feed of compounding extrusion machine, so as to as fast as possible Ground starts melting.Organic natural fiber material is introduced in melt polymers from the effluent of compounding extrusion machine.

Embodiment 5

One example of extrusion is compounded to turning double screw extruder with the taper for being equipped with forming medicine pills in water instrument.In spiral shell Bar starting point is supplied to material component in the main feed of compounding extrusion machine, so as to start melting as quickly as possible.

Embodiment 6

One example of extrusion is compounded with the single screw extrusion machine for being equipped with sieve unit and water ring pelletization instrument. Screw rod starting point is supplied to material component in the main feed of extruder, so as to start melting as quickly as possible.

Embodiment 7

V'_{Idle running}=nTA_FreelyFormula (5)

V'_Estimation=0.5nTA_FreelyFormula (6)

In this embodiment, when D/d is quantitatively 1.55 and outer screw diameter is 50mm, x₂It is 0.55.For the machine, from To be 0.138dm by area of section², available volume will be 0.11 liter in charging section length 82mm.

Fibrous material is transported in extruder with 60 kgs/hr of flow, the flow of melt polypropylene is 140,000 Grams Per Hour, while the rotary speed of extruder is 350rpm.This means the output of 0.57kg/ (h rpm), i.e. 0.17kg/ (h rpm) or 17g/s or extruder screw rotate every time 2.9g fiber feeds.If we estimate the fiber for being transported to extruder Bulk density it is identical with apparent bulk density, then we can according to following formula calculate fiber flow into machine volume flow：

Wherein, m_FiberIt is the mass flow of fiber, ρ_{It is apparent}It is the apparent bulk density of fibrous material.When it is understood that apparent heap When product density is 68g/l (dry weight), the fiber volume flow into extruder is 0.245l/s.

When fiber is added into extruder with maximum capacity, we can assume that the volume of conveying similar to V_{Idle running}(formula 5), therefore according to formula 5, and pitch (T) is 60mm, and it is 0.481l/s that we can calculate volume flow, and wherein we need Deduct the volume (0.103l/s) of polymer melt.It is 0.74kg/dm when using in 200C fusant densities³Polypropylene, and And if when the volume of air of melt is similar to polymer melt, we can calculate " using the volume " of fiber in screw rod.

Based on these contents, we can draw moment " the minimum of computation accumulation being attached in fiber in polymer melt Density " is：17 Grams Per Second/0.379 liter/second=44 g/l.When it is understood that apparent bulk density is 68g/l, coefficient of compressibility For 0.65.By keeping the coefficient of compressibility in the level until fiber is wetted, fiber is well-dispersed within plastics, and is had There are good engineering propertiess, polymer has a certain degree of degraded.

Embodiment 8

The maximum delivery capacity of extruder can be estimated according to formula 5.The information that machine suppliers or document can be based on is calculated Using volume or area of section in parallel positive rotaring twin-screw extruder screw.For two-flight screw design, can be according to formula 7 Calculate the free cross-section area of this extruder.

In this embodiment, when D/d is quantitatively 1.55 and outer screw diameter is 50mm, x₂It is 0.55.For the machine, from It is 0.138dm by area of section²。

Fibrous material is transported in extruder with 60 kgs/hr of flow, the flow of melt polypropylene is 140,000 Grams Per Hour, while the rotary speed of extruder is 250rpm.The output of 0.8kg/ (h rpm) is this means, and 0.24kg/ (h rpm) or 17g/s or extruder screw rotate every time 4g fiber feeds.If we estimate to be transported to extruder Fiber bulk density it is identical with apparent bulk density, then we can according to formula 8 calculate fiber flow into machine volume Flow.When it is understood that bulk density is 68g/l (dry weight), the fiber volume flow into extruder is 0.245l/s.

When fiber is added into extruder with maximum capacity, we can assume that the volume of conveying similar to V_{Idle running}(formula 5), therefore according to formula 5, and pitch (T) is 60mm, and it is 0.344l/s that we can calculate volume flow, and wherein we need Deduct the volume (0.103l/s) of the polymer melt of inflation.It is 0.74kg/dm when using in 200 DEG C of fusant densities³It is poly- Propylene, and if when the volume of air of melt is similar to polymer melt, we can calculate the " available of fiber in screw rod Volume ".

Based on these contents, we can draw the moment being attached in fiber in polymer melt, bulk density calculated For：17 Grams Per Second/0.241 liter/second=84 g/l.When it is understood that apparent bulk density is 68g/l, coefficient of compressibility is 1.02.By keeping the compression ratio in the level until fiber is wetted, fiber is well-dispersed within plastics, and with good Only there is slight degraded in good engineering propertiess, polymer.

Embodiment 9

The embodiment is related to Z-type blade mixer.

Composite is prepared with double-z- kneader.The kneader is that volume is about 3dm³Batch mixer.The kneader With two to turning Z-type blade, mixing velocity is constant, controls temperature.By the slow-speed of revolution of mixing paddle, prediction produces low-shearing force With low friction heat.Composite is prepared as described below：

1. kneader is heated to into 190 DEG C,

2. 300g HDPE polymer melteds are made in a mixer 10 minutes,

3. 17g coupling agents are added in polymer melt, form host material, and mixed 5 minutes,

4. organic natural fiber material of 210g oven dryings is added in polymer melt, and the form of the material is Betula Cellulose sheet, wherein the thickness of 80% thin slice is 1-20 microns, the apparent bulk density of the material is 100g/dm³,

5. continue to mix, until showing that compound well mixes and uniform, organic natural fiber material disperses well In host material, the thermal degradation of component is minimized, and

6. turn blender, the composite of preparation cools down in atmosphere.

In this specific embodiment, the bulk density calculated of organic natural fiber material is about 90g/dm³, now blender Using the volume that hybrid element, host material and additive are considered in free volume.In the specific example, compression ratio R is about 0.9.

Embodiment 10

The embodiment is related to Z-type blade mixer.

Composite is prepared with double-z- kneader.The kneader is that volume is about 3dm³Batch mixer.The kneader With two to turning Z-type blade, mixing velocity is constant, controls temperature.Due to the slow-speed of revolution of mixing paddle, prediction produces low sheraing Power and low friction heat.Composite is prepared as described below：

1. kneader is heated to into 190 DEG C,

2. 180g polypropylene is melted in a mixer 10 minutes,

3. 11g coupling agents are added in polymer melt, form host material, and mixed 5 minutes,

4. the organic natural fiber materials of 169g are added in polymer melt, and the material is the eucalyptus fibers element shape of crushing Formula, its water capacity is 7%, and apparent bulk density is 40g/dm³(dry weight),

6. turn blender, the composite of preparation cools down in atmosphere.

In this specific embodiment, the bulk density calculated of organic natural fiber material is about 70g/dm³, now blender Using the volume that hybrid element, host material and additive are considered in free volume.In the specific example, compression ratio R is about 1.7.

Embodiment 11

The embodiment is related to without compression mixing.

In this embodiment, in the case of without compression, organic natural fiber material and bag are made using machine is mixed in batch-type The mixing of host material containing polymer and additive.In this embodiment, the volume of blender is 440 liters.Using the mixing Device makes the organic natural fiber material mixing of 45kg polypropylene, 3kg additives and 12kg.The water capacity of fibrous material is 3%.First All components are added in blender, starts blender.Using extra external heat, this is because friction is relatively low, polymer Fusing time it is oversize.

Polypropylene is injection grade polypropylene.Organic natural fiber material is the fiber based on paper pulp from a scrap of paper.Add Plus agent is based on polyacrylic additive.

It is 0.74 kg/liter to melt polyacrylic density, and polyacrylic volume is 60.81 liters in blender.In blender The volume of the additive of fusing is 4.05 kg/liter.The bulk density for doing organic natural fiber material is 0.05 kg/liter, is mixed The volume that organic natural fiber material is done in clutch is 12 kilograms of * 0.97/0.05 kg/liter=232.8 liter.In processing procedure In, 3% moisture gasification.

The free volume of fibrous material is 440-60.81-4.05=375.14 liters in blender.Dry fibers in blender Calculating density is 12 kilograms of * 0.97/375.14 liter=0.031 kg/liter.In this embodiment, compression ratio R is 0.031 thousand G/l/0.05 kg/liter=0.62, so mixing is carried out in the case of without any fiber compressive.

Embodiment 12

The embodiment relates to the use of heating/cooling mixer and is mixed.

In this embodiment, composite is prepared with heating/cooling mixer.In this embodiment, blender plus The volume of hot-zone is 800 liters, and the volume of blender cooling zone is 1700 liters.By with hybrid element friction come heat.By 180kg The host material of organic natural fiber material and polypropylene containing 90kg and 30kg additives is added in the thermal treatment zone of blender.Fiber Water capacity be 5%.The moisture vaporization in processing procedure.

Polypropylene is injection grade polypropylene.Additive is mineral filler and based on polyacrylic stabilizer.Organic natural fibre Dimension material is the Eucalyptuss chemical pulp through mechanical pretreatment.The length of 90% fibrous material including possible aggregation is little In 2mm.

During all raw materials to be added first the thermal treatment zone of blender, start blender.Continue to mix, until temperature is 220 DEG C, and polymer is completely melt.Now, fibrous material and additive are disperseed by polymer melt.Uniform composite exists Cool down in the cooling zone of blender, until temperature is 50 DEG C, and material is entirely solid.After blender cooling, material is Soft, color is light brown.

Based on 121.62 liters of volume, the polyacrylic density of fusing is 0.74 kg/liter.The cumulative volume of additive is 45 Rise.The free volume of fiber is 800-121.62-45=633.38 liters.The bulk density of dry fibers is 0.25 kg/liter.Mixing The calculating density of dry fibers is 180 kilograms of * 0.95/633.38 liter=0.27 kg/liter in device.In this embodiment, mix The compression ratio of device is 0.27 kg/liter/0.25 kg/liter=1.08.

Embodiment 13

In this embodiment, using so-called interior mixed machine make in batch technology organic natural fiber material, polymer and Additive mixes.In this embodiment, the volume of blender is 5 liters.Organic natural fiber material is through chemistry and machinery The modified chemical pulp prepared by Betula.The bulk density of fibrous material is 109g/l, and water capacity is 6.5%.

2.35kg polypropylene, 0.12kg additives and 1.72kg fibrous materials are added in blender.When polymer is molten During change form, the fiber of fibrous material is attached in polymer.Fusing polypropylene and additive density together is 0.76 thousand G/l, the volume of polypropylene and additive is 3.25 liters in blender.The bulk density of the fibrous material of no moisture is 0.102 Kg/liter.

The free volume of fibrous material is 5 liters -3.25 liters=1.75 liters in blender, therefore bulk density calculated is 1.61kg/1.75 liter=0.92 kg/liter, now considers the water capacity of fibrous material.Compression ratio R is 0.92/0.102=9, Therefore mixing is carried out in the case of to fiber high compression.Situation is so set to be unfavorable for the good wet of fiber, thus it is fine Dispersion of the dimension in substrate is poor.

Embodiment 14

In this embodiment, the mixing of organic natural fiber material, polymer and additive is made by continuous processing.In the reality In applying mode, the rotary speed of hybrid element is adjusted so that the volume flow of mixture is 0.95 liter/second.By mixture melt In being transported to rotating forward parallel double-screw extruder, it is pumped in template by melt, forms mixture stock.Make after stock cooling Its granulating.

Organic natural fiber material is through the chemical chemical pulp prepared by coniferous tree with mechanically modifying, the undulation degree The bulk density of material is 125g/l, and water capacity is 1.5%.Organic natural fiber material in the embodiment has sheet form, The thickness for meaning thin slice is 2-15 microns, and width is at least big than thickness 2 times.

50kg/h polypropylene and additive and the organic natural fiber materials of 200kg/h and 50kg/h Talcums are transported to mixed In clutch.When polymer is fusing form, the fiber and Talcum of organic natural fiber material are attached in polymer.Fusing Polypropylene and additive density together be 0.76 kg/liter, the density of Talcum is 2.75 kg/liter.Therefore, in blender The volume flow of polypropylene, additive and Talcum is 0.097 liter/second.The bulk density of organic natural fiber material of no moisture For 0.123 kg/liter.

The free volume of organic natural fiber material is liter/second of 0.95 liter/second -0.097 liter/second=0.853 in blender, Therefore bulk density calculated be 55.6 Grams Per Second/0.853 liter/second=65 g/l, now consider the water capacity of fibrous material.Pressure Contracting is 65 g/l/123 g/l=0.53 than R.This causes these conditions to be suitable for the good wet of fiber.

Embodiment 15

In one example, conical double screw extruder is rotated forward for complex production.The extruder has very big to enter Material volume, but the screw rod volume in screw rod end is about the 1/8 of the volume.When fibrous material passes through screw rod, their quilts Compression, while pressure rise.When organic natural fiber material contacts the host material of melt form, so may cause Bulk density becomes high.

In this embodiment using polypropylene and the organic natural fiber material based on pinaster cellulose.In the embodiment Organic natural fiber material has sheet form, it means that the thickness of thin slice is 2-15 microns, and width is at least big than thickness by 2 Times.The chemical cellulose content of the material is less than 90%.The bulk density for doing organic natural fiber material is 0.120 g/l.Screw rod The free volume of starting point is 1.6 liters.Output is 500 kgs/hr, and natural fiber content is 50%.The substrate of melt form The feed volume of material is 0.094 liter/second, and now fusant density is 0.74kg/l.Meanwhile, add organic natural fiber material (0.58 liter/second).The extruder can be easily carried out the amount of organic natural fiber material, and bulk density calculated is less than to be had The apparent bulk density of machine natural fiber material.Adjust extruder rotating speed so that the transmission capacity of screw mixes part starting point For 0.844 liter/second.In this embodiment, fusing is started in the first mixed zone starting point polymer.When screw mixes part starting point The mass flow for locating organic natural fiber material is that 69.4 Grams Per Seconds and free transmission capacity available for the material are During 0.75 liter/second, bulk density calculated can be defined.Therefore, the bulk density calculated of the point is 93 g/l, and compression ratio R is 0.77.The transmission capacity of screw rod starting point is about high 5 times.

Embodiment 16

In one example, conical double screw extruder is rotated forward for complex production.The extruder has very big to enter Material volume, but the screw rod volume in screw rod end is about the 1/8 of the volume.When fibrous material passes through screw rod, their quilts Compression, while pressure rise.Bulk density may be so caused to become high, now organic natural fiber material contacts melt shape The host material of formula.

In this embodiment using polypropylene and the organic natural fiber material based on birch fibers element.In the embodiment Organic natural fiber material has sheet form, it means that the thickness of thin slice is 2-15 microns, and width is at least big than thickness by 2 Times.The chemical cellulose content of the material is higher than 70%.The bulk density for doing organic natural fiber material is 60 g/l.Screw rod starting point Free volume be 1.6 liters.Output is 500 kgs/hr, and natural fiber content is 40%.The host material of melt form Feed volume be 0.113 liter/second, while adding organic natural fiber material (0.93 liter/second).The extruder can be easy to Realize the amount of organic natural fiber material, apparent bulk density of the bulk density calculated less than organic natural fiber material. Adjust extruder rotating speed so that the transmission capacity of screw mixes part starting point is 0.844 liter/second.In this embodiment, exist First mixed zone starting point polymer starts fusing.When the mass flow of the organic natural fiber material of screw mixes part starting point is When 55.6 Grams Per Seconds and free transmission capacity available for the material are 0.73 liter/second, calculating can be defined and pile up close Degree.Therefore, the bulk density calculated of the point is 76 g/l, and compression ratio R is 1.27.The transmission capacity of screw rod starting point is about high by 5 Times.

Embodiment 17

With regard to the measurement of organic fibrous material

When not knowing about organic natural fiber material content of composite, composite wood can be determined using various analysis Organic natural fiber material content of material.Analysis side suitable for determining organic natural fiber material content of unknown composite Method includes but is not limited to physics, chemistry, calorifics, optics and micrology analytical technology.Can be analyzed using for example following technology Organic natural fiber material content of unknown composite：Thermogravimetric, calorimetric, spectrophotometric, crystallography, tomography and micro- point Analyse, and the different component to constituting unknown composite carries out selective dissolution and constitutes the unknown composite so as to know The mass fraction of organic natural fiber material.Assume that host material is non-bio-based materials, constitute unknown composite other Component is known or can parse that organic natural fiber material content of unknown composite can also be in the following manner It is determined that：Establishing criteria ASTM-D6866 or can distinguish bio-based and abiotic base chemical element similar analysis method (including But it is not limited to the method based on carbon dating) Bio-based content of quantitative composite, according in the organic natural fiber material of object The molar fraction of chemical element calculates organic natural fiber material content.In addition, for example, can be by x-ray diffraction and x-ray meter Calculate organic natural fiber content that tomography technology determines unknown composite.Can be by analysis method (including but not limited to Said method) various combination determine organic natural fiber material content of unknown composite.

In one example, according to ASTM-D6866 analysis bags containing organic natural fiber material and abiotic based polyalcohol The content of the bio-based matter of the composite sample of (such as the polyolefin based on oil), according in organic natural fiber material The molar fraction of carbon calculates organic natural fiber material content of composite.

In another example, by x-ray CT technical Analysis answering comprising organic natural fiber material Condensation material sample, determines the content of organic natural fiber material in sample.

Embodiment 18

Organic natural fiber material

Because organic natural fiber has moisture-absorption characteristicss, so these fibers generally comprise moisture.The moisture content of fiber takes Certainly in for example, fiber source, fiber condition of storage (such as the relative humidity and temperature of fiber storage location environment) and fiber add Work mode.The presence of moisture, in some cases, excessive moisture generally cannot be completely excluded when organic natural fiber is processed Possibly harmful.

In the case of organic natural fiber and thermoplastic polymer or other polymers complex, there is moisture in processing May cause, for example, product property such as mechanical strength and degraded appearance.Organic natural fiber-thermoplastic/polymer complex plus Work temperature is usually above the boiling point of water, this is because the fusing point and/or glass transition temperature of thermoplastic/polymer are higher than 100 DEG C.

When the temperature higher than water boiling point processes organic natural fiber-thermoplastic/polymer complex, contained humidity in fiber Evaporation can cause to form hole in product material.The hole of appearance is, for example, following form：Fiber in joint product Bubble or space between surface and matrix polymer.

Formed hole Another reason be, in process because wherein degasification it is insufficient and be mingled with air or its His environmental gas.Especially, the supply of reinforcing fibre brings the gas of large volume, needs work in-process to be removed.For example, When organic natural fiber-thermoplastic/polymer complex is prepared by compounding extrusion, need to carry out sufficient aerofluxuss to go degasification State material (including vapor, air entrainment and other gases and other volatile components).

Embodiment 19

Bulk density and compression ratio

In one example, if the organic natural fiber materials of 11.1g, its bulk density is 80g/l, and water capacity is 10 weights Amount %, the weight of dry substance is 10.0g, and bulk density is 72g/l.Can bulk density calculated as described below：By the material Material is weighed in tank (2 liters), and using blender organic fibrous material is mixed.In this case, fibrous material can equably divide In whole volume, bulk density calculated is 10g/2l=5g/l to cloth, and compression ratio R is 5/72=0.069.On the other hand, if Some other materials in addition to organic fibrous material are added in the tank, deduct the weight and volume of these materials.If (Talcum density is 2.75g/cm to there is 10g Talcums³) and 11.1 organic materials (bulk density is 80g/l, and water capacity is 10 weights Amount %), the weight of dry substance is 10.0g, and bulk density is 72g/l.In this case, the volume of Talcum is 10g/2.75g/ cm³=3.6cm³.The free volume of fiber is reduced to 1.996 liters, and bulk density calculated is 10g/1.996l=5.01g/l, compression It is 5.01/72=0.070 than R.

Embodiment 20

Bulk density and compression ratio

In one example, using extruder mixing organic fibrous material, make the material and added with the amount of 10g/s (dry) and In being transported to mixed zone, the mixed zone is with 2dm³The speed of/s forwards material.In this case, fibrous material can be equably In being distributed in whole volume, calculating apparent bulk density is 10g/2l=5g/l.On the other hand, if except organic fibrous material Outside some other materials be added in same volume (available within preset time), deduct these materials weight and Volume.For example, for 10g organic fibrous materials (dry) and 10g Talcums, (Talcum density is 2.75g/cm³), the volume of Talcum is 10g/2.75g/cm³=3.6cm³.The free volume of fiber is reduced to 1.996 liters, and bulk density calculated is 10g/1.996l= 5.01g/l。

Embodiment 21

Bulk density and compression ratio

In one example, in order to measure bulk density value, existed with blender (for example, Philip HR1570/30) first Mix organic natural fiber material suitable time in big alms bowl, such as 5 minutes.In mixed process, the fiber of all compressions and The granule of crushing is separated.Then, the weight and volume of the loose fibrous material sample is carefully measured.By loose organic fibre The weight of dimension material carrys out bulk density calculated ρ divided by its volume.Because organic natural fiber material can absorb large quantity of moisture, In all situations, water content is all deducted in the result of bulk density, the result is for dry substance, such as organic day of measurement So the bulk density of fibrous material is 100g/l, and water capacity is 5 weight %.The bulk density of the material is 95g/l.Therefore, divide Not Ce Liang water capacity and bulk density, by these numerical computations bulk densities (dry).

Embodiment 22

Bulk density calculated in extruder

If necessary to high production capacity and high organic natural fiber content, the bulk density calculated in extruder can be very Height, compression ratio is more than 1.In this case, free volume is the volume in cylinder, wherein eliminating screw rod volume, host material body Product and host material melt volume.When being mixed in the short length of screw rod, or in the delivered volume of screw rod and extruder The mass of fibre material of operation is compared less, then bulk density calculated may be high.If added with the speed of 26.7g/s organic Natural fiber, the free delivered volume of the fiber is only 0.083l/s, then bulk density calculated is about 320g/l, and compression ratio is 4.7, the apparent bulk density of material is 68g/l.

Volume transportation capacity can be improved by making organic fibrous material quickly move than screw rod, it is possible thereby to reduce Bulk density calculated ρ_Calculate.Or, organic fibrous material counter-current flow can be made, so it is distributed more by making organic fibrous material Long distance (the farther position in cylinder) is improving calculating free volume.For example, the operation can be carried out by air.Will compression Gas is blown in cylinder, and the gas can carry fiber and go to farther position from feed point.Equally, in cylinder other positions vacuum Pressure differential can be caused to transmit fiber.In both cases, the length that mixing occurs is longer, it reduces calculating and piles up close Degree.

Embodiment 23

Bulk density

In this embodiment, the sample of organic natural fiber material is collected from technique stream, the sample is considered It is sufficiently mixed and inflates, wherein fiber aggregate disintegrate, it is not necessary to other extra mixing (such as using blender, Food mixer, concrete mixer and fluidization technique) determining bulk density, the sample is added into known volume and weight In container, with the bulk density that the sample quality of per unit volume obtains organic natural fiber material.

Embodiment 24

In this embodiment, in compound mixture, (a kind of component of wherein composite mix is organic natural fiber material Material) production line on collect sample from technique stream, (including but not limited to screen, revolve by different separation and sorting technique Wind separator and vacuum separator) separate organic natural fiber material.Detached organic natural fibre can as described above be determined The bulk density of dimension material.

Embodiment 25

In one embodiment, organic natural fiber material of the joint product comprising 40-60%, dry joint product 1.5 weight % of the moisture that (50% relative humidity and 22 DEG C of atmosphere) absorb in 30 hours less than joint product weight. In one embodiment, organic natural fiber material of the joint product comprising 20-40%, dry joint product was at 30 hours 1.3 weight % of the moisture that interior (50% relative humidity and 22 DEG C of atmosphere) absorb less than joint product weight.In a kind of embodiment party In formula, the moisture that dry joint product absorbs from atmosphere can be determined.Before measurement must dry composite product.In measure Before should be by joint product in 120 DEG C of dryings 48 hours.For moisture absorption is determined, at least 10 grams products are placed on plate.Should be only on plate Place one layer of particulate layer.Then hygroscopic capacity is determined, it is the weightening relative to dry products weight.Therefore, if what is be dried is compound Product weight increases to 10.1 grams from 10.0 grams, then result is 1.0%.It is as follows in these measure conditionals：Temperature is 22 DEG C, empty Air humidity Gas content is 50% relative humidity.Different minutes can be adopted as needed.

Embodiment 26

In one embodiment, joint product includes 40% organic natural fiber material, and dry joint product is 4 0.7 weight % of the moisture that (50% relative humidity and 23 DEG C of atmosphere) absorb in it less than joint product weight.In one kind In embodiment, joint product includes 40% organic natural fiber material, dry joint product (50% phase in 48 hours To humidity and 23 DEG C of atmosphere) absorb moisture less than joint product weight 0.6 weight %.In one embodiment, Joint product includes 40% organic natural fiber material, dry joint product (50% relative humidity and 23 DEG C in 1 hour Atmosphere) absorb moisture less than joint product weight 0.15 weight %.In one embodiment, can determine dry The moisture that joint product absorbs from atmosphere.Joint product must be dried before measurement.Should be combined before measurement Product was in 120 DEG C of dryings 48 hours.For moisture absorption is determined, at least 30 grams products are placed in the cup of 2dl.Then moisture absorption is determined Amount, it is the weightening relative to dry products weight.Therefore, if the joint product weight being dried increases to 10.1 from 10.0 grams Gram, then result is 1.0%.It is as follows in these measure conditionals：Temperature is 23 DEG C, and atmospheric moisture content is 50% relative humidity. Different minutes can be adopted as needed.

Embodiment 27

In one embodiment, joint product includes 40% organic natural fiber material, and dry joint product is 4 0.85 weight % of the moisture that (65% relative humidity and 27 DEG C of atmosphere) absorb in it less than joint product weight.In one kind In embodiment, joint product includes 40% organic natural fiber material, dry joint product (65% phase in 48 hours To humidity and 27 DEG C of atmosphere) absorb moisture less than joint product weight 0.7 weight %.In one embodiment, The moisture that dry joint product absorbs from atmosphere can be determined.Before measurement must dry composite product.Before measurement should By joint product in 120 DEG C of dryings 48 hours.For moisture absorption is determined, at least 30 grams products are placed in the cup of 2dl.Then survey Determine hygroscopic capacity, it is the weightening relative to dry products weight.Therefore, if the joint product weight being dried increases to from 10.0 grams 10.1 grams, then result is 1.0%.It is as follows in these measure conditionals：Temperature is 27 DEG C, and atmospheric moisture content is 65% relatively wet Degree.Different minutes can be adopted as needed.

It should be readily apparent to one skilled in the art that in the case where needing to optimize joint product, can be using the present invention not Same embodiment.It is also clear that the present invention is not limited in above-mentioned embodiment, and can be in claims In the range of be changed.

Claims

1. a kind of method of manufacture joint product, the joint product includes organic natural fiber material and host material, wherein institute It is chemical pulp of the content of lignin less than 1 weight % to state organic natural fiber material, be the method comprising the steps of：

The organic natural fiber material of-crushing, forms loose organic natural fiber material so that the fibrous material is extremely after crushing It is partially sheet form,

- organic natural fiber material is mixed with host material in main mix stages, form mixture, the main mix stages bag Contact procedure is included, wherein,

The bulk density of-organic natural fiber material is less than 160kg/m³,

The method also includes：

- form the joint product comprising the mixture.

2. the method for claim 1, it is characterised in that the pressure of organic natural fiber material is compressed in contact procedure Less than 1 bar.

3. the method according to any one of the preceding claims, it is characterised in that under vacuo or there is nitrogen, air And/or make material mixing in the case of helium.

4. method as claimed in claim 1 or 2, it is characterised in that in the contact procedure of mixing, organic natural fiber material Water capacity be less than 7%.

5. method as claimed in claim 1 or 2, it is characterised in that by the total dry weight of joint product, organic natural fiber The content of material is at least 20 dry weights %, up to 80 dry weights %.

6. method as claimed in claim 1 or 2, it is characterised in that calculated by the total amount of organic natural fiber material, slice-shaped The amount of the fibrous material of formula is at least 30 dry weights %.

7. method as claimed in claim 1 or 2, it is characterised in that the fusing point of host material is less than 250 DEG C, and/or base The glass transition temperature of material is less than 250 DEG C.

8. method as claimed in claim 1 or 2, it is characterised in that by being molded and/or being extruded into joint product.

9. method as claimed in claim 1 or 2, it is characterised in that the host material is thermoplastic.

10. method as claimed in claim 1 or 2, it is characterised in that organic natural fiber material of at least 90 weight % is wood Material.

11. methods as claimed in claim 1 or 2, it is characterised in that organic natural fiber material length of at least 90 weight % For 0.1-3 millimeters.

12. joint products obtained by the method any one of claim 1-11.

13. joint products as claimed in claim 12, it is characterised in that joint product is particle form.

14. joint products as claimed in claim 13, it is characterised in that the weight of 100 granules be 2.0-4.0g, standard deviation Difference is less than 15%.

15. joint products as any one of claim 12-14, it is characterised in that dry joint product is little 48 When interior (65% relative humidity and 27 DEG C of atmosphere) absorb moisture less than joint product weight 1.5 weight %.

16. are used as raw material for being finally combined product by the joint product of the method manufacture any one of claim 1-11 The application of product.